Shut-off fire-hose nozzle.



PATBNTED JUNE 27, 1905. M. D. LARKIN.

SHUT-OFF FIRE HUSE NOZZLB.

APPLICATION FILED 0GT.13,1902.

//S ATTORNEY.

`NrrED STATES Patented June 27, 1905.

B'IAURIOE D. LARKIN, OF DAYTON, Ol-IIO.

SHUT-OFF FIRE-HOSE NOZZLE.

SPECIFICATION forming part of Letters Patent No. 793,203, dated June 27, 1905. Application filed October 13, 1902. Serial No. 127,202.

Be it known that I, MAURICE D. Laniv'm, a

citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented a new and useful lmprovement in Shut-Ofi' Fire-Hose Nozzles, of which the following' is a specification, reference being had to the accompanying' drawings, forming part thereof, and in which the same characters of reference designate like parts.

My invention relates to improvements in hose-nozzles, and more especially to those nozzles for fire-hose having' a shut-ofil valve.

It consists in the means, constructions, and combinations of the parts hereinafter described, and more concisely stated in the appended claims.

In the drawings, Figure 1 is a rear elevation view of a hose-nozzle embodying my invention, a portion thereof being broken away substantially on line X X of Fig. 2; and Fig. 2 is a side elevation thereof, partially in section, substantially on line X X of Fig. 1.

In said drawings the body 10 of the nozzle has waterway 11, extending' longitudinally therethrough, and from one side thereof extends a cylindrical cavity or valve-seat 12 of uniform diameter larger than and extending across said way 11. A cylindrical valve 11 of uniform diameter is revolubly mounted in said cavity or seat 12 and has a hole 15 therethrough adapted to register at times with the waterway 11. In the mouth of said cavity or seat 12 is threaded or otherwise secured a plate 16 to removably inclose valve 11 in said seat or cavity 12. Projecting through holes 17 in said plate 16 and the end wall of cavity or seat 12 are cylindrical stems 18, from opposite sides of and whose longitudinal axis are coincident with the longitudinal axis of valve 11. A bail or operating-handle 19 is secured at opposite ends to said stems 18 by screws 20 or in any other desirable manner. Plate 16 has Spanner-wrench holes 21 to permit the use of such wrench in inserting' or removing said plate 16 after bail 19 is removed from stems 18. Upon the side of valve 1-1 from which the water is discharged and u pon each side of the discharg'e-opening' l adjustably mount a pressure-applying' member or wedge in said body 1() and adapted to contact with and exert more or less pressure upon valve 14: to cause it to snugly bear at its periphery against that portion of the wall of cavity or seat 12 from which the water is adapted to flow when valve 11 is open. Each of said pressure-amplying members or wedges has a separate adj ustin g' means projecting' and accessible from the outside of said valvebody upon opposite sides of the water-discharge passage-way, whereby the pressure of valve 11 upon its seat 12 may be uniform throughout the extent of valve 11 and wherebythe setting of valve 11 at opposite ends may be varied to compensate for any unevenness in wear, as well as the cheapening of and expediting the manufacture of valves embodying my invention hy the compensating' of any variations in the diameters at opposite ends of valve 11 or its seat 12, as well as of any i-'ariations in the mountingor dimensions of valve 14 or either or both said pressureapply-'ing members or wedges. Said pressure of said members or wedges on said valve 11 resists the pressure of the water and insures a water-tight joint between the periphery of valve 11 and the wall of cavity or seat 12 only adjacent the opening' of way 11 into said cavity, while the :uljustability of said member or members enables said water-tight joint to be maintained under all variations, suoli as inaccuracies of manufacture, which would render other valves useless, wear, and analogous conditions, the construction of said member or members in the instance shown in Figs. 1 and 2 being' of screws 30, threaded into the mouths of openings 31, leading into one side only of lugs 232 upon opposite sides of said body 10 and way 11 and within the length of valve 14. A pin 83 projects centrally from the inner ends of each of said screws 30, and said pins are cach surroundeiil by revoluble sleeves b1, each having a tapering fiat face 35 upon its inner side, said faces 3:3 being' adapted to bear against the periphery of valve 11 at points opposite the entrance of way 11 into the cavity or seat 12 and upon opposite sides of hole 15, through which water may be discharged through valve 11. Each pin has an enlarged head on its inner end to prevent the IOO separation of sleeve 34 and pin 33. In Figs. 3, 4, and 5 (in which the same parts heretofore shown and described are designated with the same reference characters with the addition ofthe letter A) said pressure-applying member or members consist of a pin 40, loosely mounted in each of said openings 31A, each pin 40 having upon one side an arch-shaped face 41, bearing upon the periphery of valve 14A, and on one end each of said pins 40 has a tapering face 42. Threaded into the mouth of each of the openings 31A is ascrew 43, having a tapering point 44, whose side engages the corresponding taper of face 42 of pin 40, so that the more said screw 43 is turned in either direction the greater or lesser is the resulting pressure of face 41 of pin 40 upon ithe periphery of valve 14A. The arc-shaped faces 41 on pins 40 afford a broader bearing upon the periphery of valve 14A than faces 35 of sleeves 34 upon the periphery of valve 14, and consequently pins 40 can apply more pressure to the valve with less wear and friction. It will thus be seen that a water-tight joint is produced in the nozzle shut-off without the use of packing, tapering valves and seats, and other such expensive expedients, and that said object is accomplished by very simple and at the same time highly durable, eiiicient, and inexpensive means, permitting great adjustment for inaccuracies of manufacture and for Wear without impairing in the least the tightness of the water-tight joint and which inaccuracies and wear would render other devices useless for effective purposes.

The base of the body 10 has screw-threads 50 (internal threads in the instance shown in Fig. 2) to permit. its attachment to one end of a hose section or sections, while the opposite end of body 10 is provided with screw-threads 51, cooperating with the screw-threads upon the base of nozzle member 52, having water- Way 53 extendinglongitudinally therethrough in alinement with way 11 and also with hole 15 when valve 14 is in its open position. Near the discharging' end of nozzle member 52 and Within said way 53 is an integral projecting ring 54, having an undercut or hooked shoulder 55 opposing the flow of and condensing or solidifying the stream of water 56, Fig. 1, adapted to flow through said way 53, so at its point of discharge upon the Jdre and at intermediate points, therefore, I have still further reduced the contact of the discharged stream with the metal of the nozzles mouth by providing' shoulder 54 with a sharp inner edge for receiving said contact, saidedge being formed by an outwardly-tapered face 58 upon shoulder 54, which leaves a hollow conical space 59, Fig. 1, surroundingV said stream 56 and having as its base the mouth of the nozzle.

With my invention the stream of water is not only thrown about one-third farther than with other devices under the same conditions of pressure, wind velocity, Sac., but the compactness and solidity of the stream of Water is very much increased, and the mist, spray, and drops from the discharged stream are obviated under normal conditions. With a pressure of sixty pounds upon the water my improved nozzle of the large or dre-hose kind will under ordinary conditions throw its stream without drip through an eight-inch hole located about fifty feet from the nozzle. The compactness and greater penetration of the stream are such that it is not detracted from by the intense heat and forces its Way to the. seat of the fire by knocking down doors, tunneling through walls or other obstructions, the accomplishment of which in any other manner the intense heat prevents, while with other devices the progressive flaring and separation or non-compactness of the stream thrown is susceptible to and frequently reduced to steam by the intense heat before reaching the seat of the fire. The removability of nozzle member 52 from body 1() enables members 52 of different diameters between the points of shoulders 54 to be applied to body 10 to produce the discharge of streams of diiferent diameters when desired, as well as to readily replace worn or broken members 52. v

My improved shut-oliE nozzle is adapted-for hand fire extinguishers, chemicalengines, tanks, and for general purposes, in addition to the uses in connection with the large highpressure or steam fire-engines, as have been heretofore stated.

IVhen used in connection with hand fireextinguishers,chemical-engines, and tanks,my invention is especially adaptable by reason of its absence of packing in the shut-off and for the condensed and far-reaching character of the stream thrown. Vhere the alkali, sulfurie acid, and other solutions employed are of extra strength, the nozzle and its shut-0E will or may be conveniently made ofv acidresisting material.

Having now so fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a nozzle, a body having awaterway passing' straight therethrough, avalve in said body and having a straight Waterway therethrough adapted attimes to register with said waterway through said body, operating members projecting from said valve uponk each side of said waterway through said valve, and a plurality of separate means mounted in said body and separated by andupon. opposite -sides of that part of said waterway in said body that leads water from said valve to the nozzle, said separate means bearing against said valve and forcing said valve against its seat surrounding the other part of said waterway through said body, whereby Water passing from said valve to nozzle flows between said separate means and whereby they setting of IOO IOS

IIO

said valve at opposite sides may be varied to compensate for variations in wear or ot` construction, substantially as Specied.

2. In a valve, the combination of a body having' a cavity therein, alined straight openings in said body leading into and from said cavity, a valve in said cavity, a straight opening through said valve and adapted at times to aline with said openings in said body, operating members Vfor said valve upon opposite sides otl said opening through said valve, a recess in said cavity and upon each of the opposite sides of said opening' in said body leading from said cavity, separate means mounted in each of said recesses and bearing said valve against its seat in that portion of said cavity surrounding said opening leading into said cavity, and a separate operating member accessible from the outside oit' said body foreperating each ot' said means, whereby said opening in said body leading' from said cavity is between said recesses and said separate means and operating members, and whereby the setting ot' said valve at opposite sides may be varied to compensate Afor variations in wear or ot' construction, substantially as specified.

3. In a valve, the combination of a valvebody, a valve member revolnbly mounted in a cavity in said body, a waterway through said body and valve member, separate wedgelike members mounted in recesses of said valve body and upon opposite sides ot' said waterway, and separate means whereby each of said wedge-like members may exert pressure upon said valve member to hold it against its seat in said valve-body,substantially as speeilied.

4. In a valve, the combination of a valvebody, a valve member revolubly mounted in a cavity in said body, a waterway through said body and valve member, a separate bearing member bearing upon said valve member upon each side ot' said waterway, each ot' said bearing members being mounted in separate recesses in said valve-body, and a wedge-like member bearing upon each ot' said bearing members for holding said valve member against its scat in said valve-body, substantially as specilied.

In a valve, the combination of a valvebody, a valve member revolubly mounted in a cavity in said valve-body, a waterway through said body and valve member, a bearing member bearing upon said valve-body upon each side of said waterway, said bearing members being mounted in recesses in said valve-body and upon opposite sides ot' said waterway, and each ot' said recesses being opened at one end through the wall of said valve-body, a tapering portion upon each ot' said bearing members, and a tapering screw threaded into the open ends of each otl said recesses and adapted to bear against the tapering portions of said bearing members, substantially as specilied.

1n testimony whereof l have signed my name to this specification, in the presence of two subscribing witnesses, at Dayton, Ohio, this 1st day of September, 1902.

M AURICE D. LARKIN.

lVitnesses:

J No. P. BUeKLnY, GEO. lV. Kerman. 

